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Author: Gaspar Banfalvi
Publisher: Springer Science & Business Media
ISBN: 9400704283
Category : Medical
Languages : en
Pages : 348
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Book Description
The term “heavy metals” is used as a group name of toxic metals and metalloids (semimetals) causing contaminations and ecotoxicity. In strict chemical sense the density of heavy metals is higher than 5 g/cm3. From biological point of view as microelements they can be divided into two major groups. a. For their physiological function organisms and cells require essential microelements such as iron, chromium (III), cobalt, copper, manganese, molidenium, zinc. b. The other group of heavy metals is toxic to the health or environment. Of highest concern are the emissions of As, Cd, Co, Cu, Hg, Mn, Ni, Pb, Sn, Tl. The toxicity of heavy metals is well known at organizational level, while less attention has been paid to their cellular effects. This book describes the toxicity of heavy metals on microorganisms, yeast, plant and animal cells. Other chapters of the book deal with their genotoxic, mutagenic and carcinogenic effects. The toxicity of several metals touch upon the aspects of environmental hazard, ecosystems and human health. Among the cellular responses of heavy metals irregularities in cellular mechanisms such as gene expression, protein folding, stress signaling pathways are among the most important ones. The final chapters deal with biosensors and removal of heavy metals. As everybody is eating, drinking and exposed to heavy metals on a daily basis, the spirit of the book will attract a wide audience.
Author: Gaspar Banfalvi
Publisher: Springer Science & Business Media
ISBN: 9400704283
Category : Medical
Languages : en
Pages : 348
Get Book Here
Book Description
The term “heavy metals” is used as a group name of toxic metals and metalloids (semimetals) causing contaminations and ecotoxicity. In strict chemical sense the density of heavy metals is higher than 5 g/cm3. From biological point of view as microelements they can be divided into two major groups. a. For their physiological function organisms and cells require essential microelements such as iron, chromium (III), cobalt, copper, manganese, molidenium, zinc. b. The other group of heavy metals is toxic to the health or environment. Of highest concern are the emissions of As, Cd, Co, Cu, Hg, Mn, Ni, Pb, Sn, Tl. The toxicity of heavy metals is well known at organizational level, while less attention has been paid to their cellular effects. This book describes the toxicity of heavy metals on microorganisms, yeast, plant and animal cells. Other chapters of the book deal with their genotoxic, mutagenic and carcinogenic effects. The toxicity of several metals touch upon the aspects of environmental hazard, ecosystems and human health. Among the cellular responses of heavy metals irregularities in cellular mechanisms such as gene expression, protein folding, stress signaling pathways are among the most important ones. The final chapters deal with biosensors and removal of heavy metals. As everybody is eating, drinking and exposed to heavy metals on a daily basis, the spirit of the book will attract a wide audience.
Author: Hans Peter Degischer
Publisher: Wiley-VCH
ISBN:
Category : Science
Languages : en
Pages : 408
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Book Description
The past few years have seen an increasing interest in porous metallic materials, especially in foams made of aluminum or aluminum alloys. The stimulus for this lies in recent process developments which promise materials with better quality and lower cost. Moreover, the environment for the application of new materials has greatly changed. Nowadays higher demands for passenger safety in automobiles or for easy materials recycling make metal foams attractive where, a few years ago, the same material would have been ruled out for technical or economical reasons. This handbook gives any materials scientist and engineer involved in the research, development and application of metal foams an overview on the most recent results on new production processes, applications and industrial uses as well as the important topic of characterization and properties of these advanced materials.
Author: Tian Jian Lu
Publisher: Springer
ISBN: 3642335241
Category : Technology & Engineering
Languages : en
Pages : 289
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Book Description
Thermo-Fluid Behaviour of Periodic Cellular Metals introduces the study of coupled thermo-fluid behaviour of cellular metals with periodic structure in response to thermal loads, which is an interdisciplinary research area that requires a concurrent-engineering approach. The book, for the first time, systematically adopts experimental, numerical, and analytical approaches, presents the fluid flow and heat transfer in periodic cellular metals under forced convection conditions, aiming to establish structure-property relationships for tailoring material structures to achieve properties and performance levels that are customized for defined multifunctional applications. The book, as a textbook and reference book, is intended for both academic and industrial people, including graduate students, researchers and engineers. Dr. Tian Jian Lu is a professor at the School of Aerospace, Xi’an Jiaotong University, Xi’an, China. Dr. Feng Xu is a professor at the Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University. Dr. Ting Wen is now an engineer at Shell Global Solutions Inc. Dr. Lu and Dr. Xu are also affiliated with Biomedical Engineering and Biomechanics Center, Xi’an Jiaotong University.
Author: R.F. Singer
Publisher: Trans Tech Publications Ltd
ISBN: 3035705844
Category : Technology & Engineering
Languages : en
Pages : 300
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Book Description
This collection constitutes an essential sourcebook for researchers, producers and users seeking technical information on materials with foam-like structures. The collection is unique, in that it brings together people from the fields of metals and polymers. Both material types derive their advantageous properties from a cellular structure. These properties include: low weight, high specific stiffness and strength, excellent energy absorption capacity, as well as damping and insulation properties. On the other hand, the processing of metals is far more difficult due to the higher temperatures involved. Another important factor is the faster decay of metal foam structures, at the end of the foaming process, because of their combination of high surface tension and low viscosity. The differences in foamability, between metals and polymers, explain why cellular plastics have been widely used for some time whereas cellular metals have only recently found their first applications.
Author: Isabel Duarte
Publisher: Mdpi AG
ISBN: 9783036510385
Category : Technology & Engineering
Languages : en
Pages : 272
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Book Description
Cellular solids and porous metals have become some of the most promising lightweight multifunctional materials due to their superior combination of advanced properties mainly derived from their base material and cellular structure. They are used in a wide range of commercial, biomedical, industrial, and military applications. In contrast to other cellular materials, cellular metals are non-flammable, recyclable, extremely tough, and chemically stable and are excellent energy absorbers. The manuscripts of this Special Issue provide a representative insight into the recent developments in this field, covering topics related to manufacturing, characterization, properties, specific challenges in transportation, and the description of structural features. For example, a presented strategy for the strengthening of Al-alloy foams is the addition of alloying elements (e.g., magnesium) into the metal bulk matrix to promote the formation of intermetallics (e.g., precipitation hardening). The incorporation of micro-sized and nano-sized reinforcement elements (e.g., carbon nanotubes and graphene oxide) into the metal bulk matrix to enhance the performance of the ductile metal is presented. New bioinspired cellular materials, such as nanocomposite foams, lattice materials, and hybrid foams and structures are also discussed (e.g., filled hollow structures, metal-polymer hybrid cellular structures).
Author: Amit Kumar Ghosh
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 308
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Book Description
Cellular metals and designed porous structures are attractive, lightweight structural materials with potential applications in the transportation, electronics, biomedical, defense, building, and energy-based industries. Metal foams, sponge-like metals, and periodic geometry core structures are increasingly being considered as solutions to problems such as lightweight construction, heat exchangers, passive safety, sound dampening, filtering, and thermal stability. Momentum for the widespread use of cellular metal technology has been rising, but the field still remains at an early developmental stage. Processing and Properties of Lightweight Cellular Metals and Structures captures the current status of this emerging enabling technology. This book underscores the scientific community's enthusiasm in the outstanding potential of this unique group of materials and structures and hopes to stimulate even greater interest among research sponsors and industry. Papers cover a variety of key areas of development, such as new design concepts and functional properties, new processing technologies, microstructure and property characterization, reinforcement of foam metals, modeling of properties, component fabrication, and applications.
Author: Lorna J. Gibson
Publisher: Cambridge University Press
ISBN: 9780521499118
Category : Science
Languages : en
Pages : 536
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Book Description
In this new edition of their classic work on Cellular Solids, the authors have brought the book completely up to date, including new work on processing of metallic and ceramic foams and on the mechanical, electrical and acoustic properties of cellular solids. Data for commercially available foams are presented on material property charts; two new case studies show how the charts are used for selection of foams in engineering design. Over 150 references appearing in the literature since the publication of the first edition are cited. The text summarises current understanding of the structure and mechanical behaviour of cellular materials, and the ways in which they can be exploited in engineering design. Cellular solids include engineering honeycombs and foams (which can now be made from polymers, metals, ceramics and composites) as well as natural materials, such as wood, cork and cancellous bone.
Author: Valeria Culotta
Publisher: John Wiley & Sons
ISBN: 1118636864
Category : Science
Languages : en
Pages : 608
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Book Description
Over the last three decades a lot of research on the role of metals in biochemistry and medicine has been done. As a result many structures of biomolecules with metals have been characterized and medicinal chemistry studied the effects of metal containing drugs. This new book (from the EIBC Book Series) covers recent advances made by top researchers in the field of metals in cells [the “metallome”] and include: regulated metal ion uptake and trafficking, sensing of metals within cells and across tissues, and identification of the vast cellular factors designed to orchestrate assembly of metal cofactor sites while minimizing toxic side reactions of metals. In addition, it features aspects of metals in disease, including the role of metals in neuro-degeneration, liver disease, and inflammation, as a way to highlight the detrimental effects of mishandling of metal trafficking and response to "foreign" metals. With the breadth of our recently acquired understanding of metals in cells, a book that features key aspects of cellular handling of inorganic elements is both timely and important. At this point in our understanding, it is worthwhile to step back and take an expansive view of how far our understanding has come, while also highlighting how much we still do not know. The content from this book will publish online, as part of EIBC in December 2013, find out more about the Encyclopedia of Inorganic and Bioinorganic Chemistry, the essential online resource for researchers and students working in all areas of inorganic and bioinorganic chemistry.
Author: Rudolfs K. Zalups
Publisher: CRC Press
ISBN: 142005998X
Category : Medical
Languages : en
Pages : 442
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Book Description
With chapter contributions from more than 30 metal biology experts, Cellular and Molecular Biology of Metals explains the role of key divalent metal ions involved in the molecular and cellular biology of various target cell populations. Although it primarily focuses on homeostatic metals, such as nickel, zinc, and chromium, the text also discusses
Author: Andreas Öchsner
Publisher: John Wiley & Sons
ISBN: 3527621415
Category : Technology & Engineering
Languages : en
Pages : 439
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Book Description
Providing the reader with a solid understanding of the fundamentals as well as an awareness of recent advances in properties and applications of cellular and porous materials, this handbook and ready reference covers all important analytical and numerical methods for characterizing and predicting thermal properties. In so doing it directly addresses the special characteristics of foam-like and hole-riddled materials, combining theoretical and experimental aspects for characterization purposes.
